Repeating mechanism for phonographs.



No. 767,342. PATENTED'AUG. 9, 1904.

H. P. HUSH.

REPEATING MECHANISM FOR PHONOGRAPHS.

APPLICATION FILED JUNE 1, 190a.

(lumen l'oz UNITED STATES Patented August 9, 1904.

PATENT OEEIcE.

HARRY P. HUSE, OF THE UNITED STATES NAVY, ASSIGNOR TO UNITED STATESSCHOOL OF LANGUAGES, OF INILMINGTON, DELAWARE, A

CORPORATION OF DELAIVARE;

REPEATING MECHANISM FOR PHONOGRAPHS- SPECIFICATION forming part of,Letters Patent No. 767,342, dated August 9, 1904.

Application filed June 1, 1903. Serial No. 159,624. (No model.) i I Toall whonz/ it natty concern:

Be it known that I, HARRY P. HUSE, of the United States Navy, haveinvented a certain new and useful Improvement in Repeating Mechanismsfor Phonographs, of which the following is a full, clear, and exactdescription.

In utilizing sound-reproducing machines such as those commonly known asphonographs, graphophones, and gramophones -especially for educationalpurposes, it is desirable to provide for the repetition of a part or thewhole of a record. Means for accomplishing this object have been appliedto the Edison phonograph, and means have been devised for automaticallyreturning the reproducer to the initial starting-point at the completionof the travel of the reproducer in disk machines.

In the present invention means are provided for arresting the reproducerof a disk machine and resetting it at any desired point in thesoundgroove of the disk, so as to repeat any portion of the record anynumber of times.

The means last above referred to include a device cooperating withanother member to raise the stylus out of the sound-record groove as therecord rotates, move it laterally and arrest it at a selected pointbetween the ends of such groove, and then return it to the groove atsuch selected point again to traverse the previously-traveled portionofthe groove, so that any desired portion of the record less than thewhole may be repeated as often as required.

In the accompanying drawings,illustrating the invention, in the severalfigures of which like parts are similarly designated, Figure 1 is a topplan view, and Fig. 2 is a side elevation, showing a disk machinesomewhat conventionally and having the improvement applied. Fig. 3 is anend view, on a larger scale, of the improvement.

The disk record 1 is as usual, and so are the bracket 2, reproducer-arm3, and reproducer 4 and its stylus.

The yoke 5, in which the reproducer-arm is pivoted and which turns withthe arm as it sweeps horizontally over the disk, has pivoted in it alever 6, one leg, 7, of which extends beneath the arm 3 forwardly, andthe other leg, 8, of which extends rearwardly and is formed with afinger-piece 9, elevated to about the level of the top of arm 3. The leg8 is also provided with a knife-edge 10 on its lower side. On the heador socket end of the bracket 2 is a clamp 11, supporting a ratchettoothrack 12 in line with the knife-edge and equal to its sweep.

The lever 6 constituted as above forms a trigger and is herein sodesignated.

If it be desired to repeat any portion of the record during itstransmission, the finger-piece 9 is depressed, thus elevating the leg 7and the arm 8, and consequently raising the stylus out of thesound-groove in the disk. The knifeedge 10 then comes into contact withthe slanting side of the selected adjacent tooth in the rack 12, and asit descends toward the root of such tooth a reverse movement is impartedto the reproducer-arm, setting it back, and then the trigger, beingreleased, the stylus enters the sound-groove at a definite point distantfrom which it was removed and is caused to travel again along thegroove, and-so repeat any desired portion of the record less than thewhole. As is obvious, this repetition may be effected any number oftimes and at any point in the travel of the reproducer.

The invention is not limited to the details of arrangement of thetrigger.

The value of the attachment will readily occur to any one engaged inteaching languages, music, and other subjects where inflection,pronunciation, enunciation, and the like are of importance.

What I claim is 1. The combination with a reproducer, its support, itsstylus, and a record-disk, of a repeating mechanism for shifting thereproducer as often as desired at anypoint within the length of thegroove in the disk as it travels therein, comprising essentially meansto raise the stylus out of the groove as the record-disk rotates, saidmeans cooperating with means to move said stylus laterally a limiteddistance and arrest its lateral motion and return it to the groove inthe rotating disk at any desired point between the ends of the groove torepeat any desired portion of the record less than the whole.

1-. In a repeating mechanism for phonographs, a horizontally-swingingreproducerarm, a hand-actuated trigger applied to it and capable ofraising its stylus out of the soundgroove, a knife-edge on said trigger,and a ratchet-tooth rack with any selected tooth of which saidknife-edge cooperates to shift the reproducer-arm backwardly at anypoint in its travel less than the whole.

